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Anatomy of the Intestines01:23

Anatomy of the Intestines

Although digestion of proteins, carbohydrates, and lipids may begin in the stomach, it is completed in the intestine. The absorption of nutrients, water, and electrolytes from food and drink also occurs in the intestine. The intestines can be divided into two structurally distinct organs—the small and large intestines.
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The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the small...
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Related Experiment Video

Updated: Jul 13, 2026

Determining Soil-transmitted Helminth Infection Status and Physical Fitness of School-aged Children
10:57

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Published on: August 22, 2012

Bowel frequency in healthy children.

M Fontana1, C Bianchi, F Cataldo

  • 1Clinica Pediatrica Universita di Milano, Italy.

Acta Paediatrica Scandinavica
|September 1, 1989
PubMed
Summary

Children

Area of Science:

  • Pediatrics
  • Gastroenterology
  • Human Physiology

Background:

  • Bowel habits in children exhibit significant variability.
  • Understanding typical bowel frequency is crucial for pediatric health assessment.

Purpose of the Study:

  • To document the distribution of bowel frequency percentiles across different age groups in a large cohort of Italian children.
  • To investigate the influence of feeding type on stool frequency in infants.

Main Methods:

  • Prospective data collection of bowel frequency using diary sheets.
  • Study involved 662 children across six Italian cities.
  • Analysis of stool frequency distribution by age and feeding type.

Main Results:

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  • A wide range of interindividual variability in bowel frequency was observed.
  • Bowel frequency significantly decreases with increasing age.
  • Breast-fed infants demonstrated a higher stool frequency compared to formula-fed infants.

    • Conclusions:

    • Bowel frequency in children is highly variable and age-dependent.
    • Breastfeeding is associated with increased stool frequency in infants.
    • These findings provide normative data for pediatric bowel habits.